Greece · Santorini
Santorini
Sea
75.9°F
Air
–
UV
–
Beach day
23–28°C
More like this
All beaches · Greece
Climate · monthly averages
Sea temperature by month
5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
57°F
61°F
64°F
68°F
72°F
75°F
79°F
82°F
86°F
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
MinMin °F
6362.9
6161.2
6161.3
6261.8
6565.3
7271.8
7473.9
7777.1
7676.0
7170.9
6867.7
6564.5
AvgAvg °F
6463.8
6262.3
6261.9
6362.9
6666.5
7373.0
7676.0
7878.2
7776.8
7272.5
6969.2
6665.7
MaxMax °F
6564.7
6363.4
6363.0
6564.8
6767.5
7574.8
7777.3
7979.0
7877.8
7474.0
7171.4
6767.3
Warmest in August (78.2°F). Coldest in March (61.9°F). Comfortable for swimming from May to December.
About Santorini
Santorini is the crescent rim of a flooded caldera in the southern Cyclades, gouged by the Minoan eruption around 1600 BC; the cliffside towns of Fira and Oia perch some 300 metres above the lagoon. Near Akrotiri on the southwest tip, Red Beach (Kokkini Paralia) tucks beneath rust-coloured volcanic cliffs, while Perissa stretches a long black-sand strand along the eastern coast below Mesa Vouno. Sea temperatures hold between 23 and 25 °C from July through September, with Thira (JTR) airport about 15 minutes by road.